Seiko Cal. 4420 - 758

Seiko 4420-758

The 4420-758 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 4420 caliber with 30j jewels beating at 28,800 bph, it delivers a 38 hours power reserve. [seikata-wm-710540cfdbdb]

Also known as: Silverwave, Bellmatic

Specifications

Movement
Kinetic
Case Material
PVD Black
Case Width
45mm
Case Thickness
11.3mm
Lug Width
21mm
Crystal
Hardlex
Bezel
Fixed
Water Resistance
140m
Dial Color
White
Jewels
30j
Frequency
28,800 bph
Power Reserve
38 hours
Year
1977

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